If you fly your Discovery with a Taranis X8R, here is a cover to, well, cover it up. This not only makes your quadcopter look more polished, but also prevents any of the servo wires from pulling out, which would suck. There are two notches in the back for the antennas to protrude from.Print with support and very little fill. The walls are very thick, so you must use a low fill percentage to keep the weight down. The support material will be inside, so you do not have to worry about it messing up the aesthetics. Attach with double-sided tape. You should also tape down the antennas.